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canoe to America during the 16th and the 17th century ______
![](https://lstatic.shangxueba.com/jiandati/pc/images/jdt_panel_vip.png)
A.They migrate from North America to the Falkland Islands.
B.They migrate only once during their lifetime.
C.They migrate using what is apparently an inborn navigational ability.
D.They migrate when they are freed from their cages.
A.比如内外串通、泄露机密等这样的不法行为在投标中时有发生。
B.collusion
C.college
D.colleague
E.solution
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